CPU fault

What does E.CPU mean?

This fault indicates a critical communication error within the inverter's built-in CPU, leading to an immediate stop of the output. Potential causes include severe electrical noise in the operating environment or an unintended short circuit between the PC and SD control terminals. Resolving this is essential for any inverter operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If troubleshooting steps do not resolve the fault, contact your sales representative for advanced diagnostics.